As far as i can see my iPhone (4, newest iOS) obtains an IPv6 by DHCP6 from my carrier over 3G so it *should* be able to use it.
All my devices (iPhone, iPad, Android phone, my old Nokia even) get (and use + prefer) IPv6 in my home Wifi by DHCP6 from my Netgear router (which then tunnels to he.net since
UPC Austria has no IPv6 officially).

Anyway, that what follows is pretty offtopic - I'd like to share the IPv6 and IPv4 usage of some ISPs in Austria which might be interesting for you
since we are a rather small (both in population and size) but highly connected country used often as a testbed for new tech (highest 3G usage rate in the EU, first 3G network in the EU, highest LTE usage rate in the EU etc etc)

We have a few main ISPs here:
UPC
Telekom Austria

And some smaller ones like Hotze.com and local networks and the mobile ISPs.

So far you get a dynamic external IPv4 IP at most of them when using DSL, the smaller ISPs like Hotze and I3B usualy give one static IP per connection.
UPC gives a "semi" static IP at cable connections (DHCP lease time is somewhere 2030 - i have my IP since over a year now) and Blizznet/D-Light (FTTH providers) use only static IPs.

Hotze and I3B have IPv6 - The BIG ones (UPC, Telekom) have no IPv6 at all, neither for private nor for business customers.

Now the more interesting part, the mobile networks.
We have the "usual bunch":
Three (Drei)
Orange (was: One)
A1 (Telekom owned)
T-Mobile
Tele.Ring (was: Max Mobil)

Three by default NATs any customer in 3G services in 10.x - You can disable this at their customer panel and thus obtain a public IP which is a very nice feature and surely helps to save IPs.
Orange NATs in 192.168.x and seems to use public IPs sometimes when you are on EDGE - Business customers can obtain a static IPv4 for 1EUR / month.
A1 uses NAT exclusively
TMobile/Tele.Ring seem to use NAT also but i didn't try them.


As you can see much here is based on NAT (at least mobile)… now you may ask, what about IPv6?
Simply, IPv6 is not offered by ANY ISP here.

My best guess is that maybe 100k, if not less, people in Austria use or are able to use IPv6 (either native or tunneled).



--
William Weber | RIPE: WW | LIR: at.edisgmbh
Network in: Austria - Germany - France - Italy - Poland - UK - Netherlands - USA - Hong Kong 
EDIS GmbH (AS57169) NOC
Graz, Austria

Am 05.06.2012 um 09:55 schrieb Gert Doering:

Hi,

On Tue, Jun 05, 2012 at 01:54:09AM +0200, Lu Heng wrote:
In which, tells us that if US can free us even half of it's IP address
space, that will supply us maybe another decades.

This would be very ill-spent effort.

If we do the same stupid things a few more decades, like "write new software
with IPv4 only, sell millions of phones and other gadgets with IPv4 only",
migration to something reasonable will be much *harder*.

If we had done the IPv6 thing 5 years ago already, hardly any mobile
device would have been affected - today, there's millions of iThings and
Androids that don't support IPv6 on 3G - stupid and avoidable pain.

Gert Doering
       -- NetMaster
--
have you enabled IPv6 on something today...?

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